hulbert



No. 612.608. Patented Oct. l8, I898."

S. C. HULBERT.

BACK FLUE FOB RANGE OVENS.

(Applicationfiled Sept. 27, 1897.) (No Model.) 5 Sheets8heet I.

INVENTB w/za S w \MTNEEEE: M614. 4 @ul No. 6|2,608. Patented Oct. l8,i898. S. G. HULBERT.

BACK FLUE FUR RANGE ovals.

(Application filed Sept. 27, 1897-.)

(No Model.) 5 Sheets-Sheet 2.

n. Q Q Q g 2 $3 M l 2 m j \x \M NEEEJE I /z&w 4 M 4% 1x0. 5%/@ PatentedOct. I3, [898.

No. 6l2,608.

S. DQHULBERT. BACK FLUE FOR RANGE OVENS.

(Application filed Sept. 27, 1897.)

5 Sheets-Sheet 3.

(No Model.)

L. E a-- \A/ITNEEEIES N0. 6l2,608. Patanted 0012. 18, I398. 840.HULBERT.

BACK FLU E FOR RANGE OVENS.

A lication filed Sept. 27, 1897.)

5 Sheets-Sheet 4.

(No Model.)

fip b III IIIIIIIIIq Nu. 6l2,608.

' Patented Oct. l8, I898. S. C. HULBERT. BACK FLUEFOR RANGE OVENS.

5 sheets-sheet 5.

(Application filed Sept. 27, 1897.)

(No Model.)

I I I WTNEESEE amt STATES SEYMOUR o. HULBERT, or GENEVA, NEW YORK,ASSIGNOR 'ro THE PHILLIPS a CLARK STOVE COMPANY, or SAME PLACE.

BACK FLUE FOR RANGE-OVENS.

SPECIFICATION forming part of Letters Patent No. 612,608, dated October18, 1898..

Application filed Septemb 27, 1897- fierial No. 653,115. (No model.)

To all whom it may concern:

Be it known that I, SEYMOUR O. I-IULBERT, of the village of Geneva,county of Ontario, and State of New York, have invented new and usefulImprovements in Back Flues for Range-Ovens, of which the following is aspecification.

My invention relates to cooking-ranges and certain improvements in themanner of constructin g and connecting the flue which leads from therange-oven bottom flue to the exit at the back of the range, by whichimprovements the heat and gases passing to the exitpipe under the draftimpulse are made better available to heat the oven.

Accompanying this specification to form a part of it there are fiveplates of drawings containing eight figures illustrating my in-.vention, with the same designation of parts by letter-reference used inall of them.

Of the illustrations, Figure 1 is an elevation of a range with myimprovement applied thereto and with What is the back of the rangewhereat the exit-pipe is located shown as facing the view. Fig. 2 is aside elevation of a plate forming the outer wall of the back ascendingflue of the range and shown as detached and with what is its interiorsurface when in position shown as facing the view. Fig. 3 is anelevation of the range with what is its back shown as facing the viewand with the plate forming the rear wall of the ascending flue back ofthe oven removed. Fig. 4 is a central vertical section of the range,taken from end to end. Fig. 5 is a transverse section taken on the line:0 0c of Fig. 6. Fig. 6 is a section taken on the line 00 m of Fig. .5.Fig. 7 is a transverse section taken on the .line x 934 of Fig. 1, andFig. 8 is another trans verse section taken on the line :0 a"? of Fig.1.

The several parts of the range thus illustrated are designated byletter-reference, and the function of -the parts is described asfollows:

The letters A designate the ash-pit section of the range, P thefire-chamber section, and F" the horizontally-arranged flue passing overthe top i of the oven 0, between the latter and the pot-hole top of therange, (indicated at T,) said flue F conducting the heat and rangedbetween the bottom of the latter and the range-bottom B The flue-spacebeneath the oven is divided in two parts F and F by thevertically-placed and diagonally-arranged flue-strip S, and the heat andgases descending through the flue F enter the horizontally-arranged ovenbottom flue F to pass toward the fire-chamber end of the range aroundthe end (P of the flue-strip S to enter the other bottom flue part F,and to return through the latter and by means of the opening 0 to enterthe ascending flue F upon the upper end of which the exit-pipe collar isplaced.

All of the beforenamed parts, excepting those forming the ascending backoven-flue F as I construct and connect it, are wellknown features ofrange structure and to which, apart from their combination with myimproved construction and connection of the ascending flue back of theeven, I make no claim.

The letter P designates a plate forming the rear wall of the range andalso the rear wall of the oven, and where forming the latter it isprovided with eXteriorly-projected flanges f, as shown at Fig. 3, and atits upper end this plate P is provided with a passage way 1, opening outfrom the oven top line F, which opening is provided with a damper D, andat its lower end this plate P is made with a passage-way 0 opening outfrom the oven bottom flue F", at the end of the latter most remote fromthe fire-chamber end of the range.

The letter N designates a plate constructed to attach to the outer faceof the plate P so as to produce thereon where the latter forms the rearwall of the oven an ascending flue back ofthe latter, with the exit-pipecollar E formed in part on this plate. This plate N on its outer edges cis exteriorly convex to form the flue, which it incloses against therear wall of the oven, with its outer surface where extending inwardlyfrom its rounded edges flat. ,This plate N is provided with a channelnioutwardly projected from the plate in and which channel is diagonallyextended from its top to its bottom, with said channel at its upper endclosing around the opening I in the flue F, and at its lower end thischannel exteriorly closes around the opening leading from the ovenbottom flue F This plate N is connected to the plate P forming the rearwall of the oven by being cemented at its inturned edges to the flangesf and by screw-bolts 5 The operation of the range thus constructed andarranged to be operated is as follows:

When fire is kindled in the fire-chamber, to have the fire start promplythe damper D is 'opened, so that the products of combustion evolved fromthe fire will pass directly to the exit-pipe. \Vhen the fire has becomewell ignited and it is desired to heat the oven, the damper D is closed,which causes the heat and gases to pass through the flues F, F F and Fto enter the flue F at the back of the oven and to .pass from thence tothe exit. By forming the flue F upon the oven-back and constructing itwith the channel 02 projected diagonally across the rear Wall of theoven, with it extending downwardly to inclose within the flue F theopening 0 and upwardly to inclose the opening I, this channel furnishesa passage-way for the more rapidlymoving currents of heat passingthrough the flue F inclosing them against the rear wall of the oven intheir passage, while the more slowly-moving currents of the heat Wherewithin the flue at each side of the channel a also tend to heat theoven-side, and thus the oven of a range can be heated at the back by abroad or sheet flue in which the contingency of a trap occurring tointerfere with the operation of the draft movement through a broadsheet-flue to an exit-pipe is avoided by the construction of the channela as applied to and combined with such a flue.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. The combination with arange-oven provided with a fire-chamber at oneof its ends and having a flue passing from the fire-chamber over theoven-top, thence down at one end of the oven, and thence to pass beneaththe oven toward the fire-chamber end of the range, and to return to theopposite end of the range; of an ascending flue formed on the back ofthe oven to cover the latter, and connecting with the oven bottom flueat its return end, and with the top flue by an opening formed in thelatter, having a damper; said ascending flue having an outwardly-projected channel extending diagonally from the bottom to the top of saidback flue, and at its upper end having thereon the exit-pipe collarsubstantially as and for the purposes set forth.

2. The combination in a range having the fire-chamber section P, theoven 0, and the lines F, F F and F of the rear ascending flue F arrangedto cover the back of the oven, and provided with theoutwardly-projected, and diagonally-extended channel of, connecting at 0with the flue F and at I, with the flue F, and at its upper endconnecting with the exit-pipe collar, constructed and arranged to beoperated substantially in the manner as and for the purposes set forth.Signed at Geneva, Ontario county, State of New York, this 21st day ofSeptember, 1897, and in the presence of the two witnesses whose namesare hereto written.

SEYMOUR C. I-IULBER'I. WVitnesses:

GEO. F. ANNAS, HORACE WEBSTER.

